Crowns and Bridges

A crown is a type of dental restoration which completely caps or encircles atooth or dental implant. Crowns are often needed when a large cavity threatens the ongoing health of a tooth.[1] They are typically bonded to the tooth using adental cement. Crowns can be made from many materials, which are usually fabricated using indirect methods. Crowns are often used to improve the strength or appearance of teeth.

A bridge is a fixed dental restoration used to replace a missing tooth by joining an artificial tooth permanently to adjacent teeth or dental implants.

Types of bridges may vary, depending upon how they are fabricated and the way they anchor to the adjacent teeth. Conventionally, bridges are made using the indirect method of restoration. However, bridges can be fabricated directly in the mouth using such materials as composite resin.